The state of play from Axios' Amy Harder, who argued last month that two factors might require a rewrite of the emissions regulations: Gasoline prices have dropped and revived Americans’ longstanding preference for pickup trucks and SUVs over smaller, more fuel-efficient cars, and the Obama administration also rushed a technical review of the standard in November 2016 after Trump’s surprise election victory.

Extra: The states joining California in the lawsuit are Connecticut, Delaware, District of Columbia, Illinois, Iowa, Maine, Maryland, Massachusetts, Minnesota, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, Virginia and Washington.